Multipartite entanglement, quantum-error-correcting codes, and entangling power of quantum evolutions
arXiv:quant-ph/0310137 · doi:10.1103/PhysRevA.69.052330
Abstract
We investigate the average bipartite entanglement, over all possible divisions of a multipartite system, as a useful measure of multipartite entanglement. We expose a connection between such measures and quantum-error-correcting codes by deriving a formula relating the weight distribution of the code to the average entanglement of encoded states. Multipartite entangling power of quantum evolutions is also investigated.
13 pages, 1 figure